scooby05lgt Posted June 14, 2010 Share Posted June 14, 2010 i was on my way home fron the local meet and on the interstate cruising at 70 mph my lgt started to hesitate or studder ever 2-3 seconds. i accelerated slightly(50% throttle in 5th gear) and acted fine. let off the throttle, same acted normal.. held the throttle to keep it at 70 and it studdered again. i did this with the ac on and off. i also tried the cruise control and got the same result.. doesanybody know whats wrong? fuel pump? ignition? any help would be great! stock, open dp, k&n panel filter, and APv2 stage 1.. been running this for about 3 weeks and just started acting up tonight.. Link to comment Share on other sites More sharing options...
StoplightAssassin Posted June 14, 2010 Share Posted June 14, 2010 vacuum leak...check all of your lines and the t fitting under the intercooler Link to comment Share on other sites More sharing options...
scooby05lgt Posted June 14, 2010 Author Share Posted June 14, 2010 are you sure? it idles fine.. Link to comment Share on other sites More sharing options...
StoplightAssassin Posted June 14, 2010 Share Posted June 14, 2010 yep Link to comment Share on other sites More sharing options...
scooby05lgt Posted June 14, 2010 Author Share Posted June 14, 2010 will do thx dude! take it you had the same problem? Link to comment Share on other sites More sharing options...
StoplightAssassin Posted June 14, 2010 Share Posted June 14, 2010 probably everyone on this site has at one time or another lol Link to comment Share on other sites More sharing options...
clarkwgriswold Posted June 14, 2010 Share Posted June 14, 2010 I'm going through this right now. My car has the same issue. I did some data logging and it's pointing towards the front o2 sensor. Will be replaced by the end of the week. I will let you know or if you have time data log it and post it in the tuning section. Those guys are pretty helpful. My Air/fuel ratio was going crazy. Link to comment Share on other sites More sharing options...
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